Obesity remains a serious health problem and it is no secret that many people want to lose weight. Behavioral economists typically argue that “nudges” help individuals with various decisionmaking flaws to live longer, healthier, and better lives. In an article in the new issue of Regulation, Michael L. Marlow discusses how nudging by government differs from nudging by markets, and explains why market nudging is the more promising avenue for helping citizens to lose weight.

Two long wars, chronic deficits, the financial crisis, the costly drug war, the growth of executive power under Presidents Bush and Obama, and the revelations about NSA abuses, have given rise to a growing libertarian movement in our country – with a greater focus on individual liberty and less government power. David Boaz’s newly released The Libertarian Mind is a comprehensive guide to the history, philosophy, and growth of the libertarian movement, with incisive analyses of today’s most pressing issues and policies.

At the end of his oral statement, former 9/11 Commission co-chairman Tom Keane made a half-hearted pitch for implementation of the REAL ID Act, the national ID law Congress passed attached to a military spending bill in early 2005. His written statement with fellow former co-chair Lee Hamilton dedicates three paragraphs (out of 23 pages) to the appeal for the national ID law.

The paltriness of Keane’s argument for a national ID parallels the recommendations of the 9/11 Commission report. It dedicated three-quarters of a page (out of 400+ pages) to identity documents. The 9/11 Commission report did not detail how a national ID would have secured against 9/11 in any way that is remotely cost-effective. Indeed, nobody ever has, much less how having a national ID would secure against future attacks.

In his testimony, Governor Keane touted the expertise of the Bipartisan Policy Center’s National Security Preparedness Group, with which he is affiliated. Given all that expertise and the supposed urgency of implementing the national ID law, you would think that the Bipartisan Policy Center’s Web site would have a definitive articulation of how REAL ID would secure the country. It doesn’t.

I urge my colleagues to oppose the REAL ID Act. We must ask our Senate conferees not to allow such a controversial measure to be pushed through Congress on an emergency spending bill. The REAL ID Act contradicts our historic identity as a nation that provides haven for the oppressed. The REAL ID Act would not make us safer. It would make us less safe.

If the 9/11 Commission co-chairs, the Bipartisan Policy Center, or any other set of advocates want to go to battle over REAL ID, they should make their best case for having this national ID. Tell us how it would work, and how it would defeat the counterattacks and complications of national-scale identity systems. Anyone attempting to do so can expect a schooling from yours truly, of course. The alternative, which I recommend, is to drop the national ID advocacy and work on things that cost-effectively secure the country without sacrificing our freedom and privacy.